Throttle Valve Assy, American Pneumatic Tool part number 1280583209, listed as 18856 before the renumbering, listed at Crowder Supply as APT18856. This is control gear it meters air to the chipping hammer. A worn control gives creep, hard starting, or a tool that will not shut off cleanly.
The published breakdown lists it on the M43 M44 4-Bolt Chipping Hammer. Check it against the reference number on the diagram first; serial breaks change what fits.
Everything else on that machine is one page away on the parts diagram hub; complete tools are on the American Pneumatic Tool range. Stocked in Denver orders placed by 4 PM ET ship the same day when the part is on the shelf.
- Part number: 1280583209
- Previous part number: 18856
- Manufacturer: American Pneumatic Tool
- Crowder SKU: APT18856
- Listed on breakdowns for: M43 M44 4-Bolt Chipping Hammer
